»In Defense of Eye Candy«

Norman offers an explanation, citing evolutionary biology and what we know about how our brains work. Basically, when we are relaxed, our brains are more ﬂexible and more likely to ﬁnd workarounds to difﬁcult problems. In contrast, when we are frustrated and tense, our brains get a sort of tunnel vision where we only see the problem in front of us. How many times, in a ﬁt of frustration, have you tried the same thing over and over again, hoping it would somehow work the seventeenth time around?